This is the concept for a TV game show slash reality show. Basically, a store is selected to be used a stadium, no colosseum. Depending upon the size of the store selected, participation could either be team based, one on one, or even free for all. In fact, it would probably be interesting to have a few different leagues to keep things interesting.

Additionally, there could be some variation by means of different scenarios. For example, a defend and assault scenario where one team could be given a head start to bunker down in the store, and then the other team begins with an assault. Of course all the favourite modes could be done as well, like capture the flag, last man standing, etc.

Basically, the rules are that you can use whatever you find in the store to combat the other players. This means, you reach the gun sections first, you can use guns. Wanna be more creative? Get to the cleaning supplies aisle and concoct yourself some weapons. The possibilities are really limitless.

Obviously, long standing players would acquire a preference for certain items and techniques, so by switching the store around, it requires the players to be creative and to produce more weapons. At a hunting store, the best weapons are obvious. But what about at a book store? Or a grocery store? This is when things get interesting.